<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>ACE editor</title>
  <style type="text/css" media="screen">
    body {
        overflow: hidden;
    }
    #editor {
        margin: 0;
        position: absolute;
        top: 0;
        bottom: 0;
        left: 0;
        right: 0;
    }
  </style>
</head>

<body>
<pre id="editor"></pre>

<script src="ace.js" type="text/javascript" charset="utf-8"></script>
<script>
    var editor = ace.edit("editor");
</script>

</body>
</html>